Cannon Instrument CMRV-4500 - Manual (Page 38)

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CANNON ® Mini-Rotary Viscometer CMRV-4500 Instruction & Operation Manual
Version 1.1e—October, 2011 • CANNON ® Instrument Company
2139 High Tech Road • State College, PA • 16803 • USA
17. When you have finished cleaning the viscometer cells and rotors,
click Stop Cleaning Cycle . Then click to exit the Cleaning ...
window.
NOTE After the cleaning cycle, you should permit the cells and rotors to dry for
15 minutes before introducing oil sample into the viscometric cells.
Inserting rotors
The viscometric cells are numbered from left to right when looking at the
viscometer from the pulley-wheel side, with cells 1, 3, 5, 7, and 9 in the
front row and cells 2, 4, 6, and 8 in the back row. Each rotor is identified
by the number at the top of its shaft.
1. Rotors are normally stored in the integral storage drawer. When you
are ready to begin a temperature profile, inject the sample and gently
place each of the nine numbered rotors into their corresponding
viscometric cells.
CAUTION Do NOT drop the rotors into position or you may damage the rotor tips.
Inserting rotor pins 2. Align the rotor beneath the corresponding hole in the upper bearing
plate.
NOTE The upper bearing support should have approximately 1 to 2 mm (1/32
to 1/16 inch) clearance above the top of the rotor shaft. If the rotor tip is
not seated properly, there will not be enough clearance between the top
of the rotor shaft and the upper bearing plate to permit orientation of the
rotor under the bearing plate.
3. Insert the pin through the plate and into the center bearing hole at the
top of the rotor shafts.
NOTE The pins, when inserted through the upper bearing plate, should extend
approximately 3 mm (1/8 inch) below the plate.
Checking rotors 4. Make sure that the rotor locking pins are in the raised (detent)
position. Rotate each of the rotors to ensure that it spins freely and
without signs of binding at either bearing.
5. Remove the rotors from the viscometric cells.
6. If necessary, install the pulley-wheel assembly on the slide track. See
Chapter 4 for details.
Sensor connection 7. Make sure that the free end of the sensor wire from the pulley-wheel
assembly is plugged into the receptacle marked WHEEL on the
CMRV-4500 front panel.
You are now ready to perform the CMRV-4500 calibration procedure or
run a test sample using the applicable test methods or a custom profile.
See the appropriate chapter for further instructions.